Autocomplete widget in node sidebar causes overflow

Triaging this issue as part of the Bug Smash Initiative.

I've tried to reproduce the issue as described in the issue summary on a fresh install of Drupal 10.1.x-dev and Claro enabled as backend theme as default. When I install the module mentioned above, enable it, add a user (with a very long username) and go to /node/add/article, I do not experience this issue:

Is this still an issue for anyone? This was posted almost a year ago, so the cause might have been solved in the meantime. Or perhaps there are additional steps needed for this issue to occur. If so, please update the issue summary with the necessary steps to reproduce this behavior so we can try to find a fix.

If no additional information is added in the next 3 to 6 months, this issue may be closed. Thank you!

Hi @tinto,
I was able to replicate this issue with Drupal 10.1.x-dev and Claro. After enabling the module I went to admin/structure/types/manage/article/form-display and change the Widget of Co-authors to Autocomplete and I can see the same when I tried to add a new article.

I can see the same result as yours when I change the Widget to Autocomplete (Tags style).

I have manually tested this on 11.x from a standard install following the steps in the previous comments (i.e changing the widget) and I do not see an overflow, even on a narrower screen.

I am closing this as cannot reproduce, please reopen if you are able to come up with a set of steps to reproduce this.